tutorial broken
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I’ve followed the STM32MP1 CubeMX Tutorial for OSD32MP15x, and well it doesn’t work. I think it is because the patching instructions aren’t included in the tutorial so you end up with something that doesn’t work. “Error: Message from Embedded Flash Loader : mmc device 0 not found” This is likely because the missing sdcard detect pin? among other things not compatible with DK2.
Why are the patch files necessary? I really don’t mind downloading an already patched Developer-Package with the files for CubeProgrammer.
You all need to improve this tutorial. And be sure you do it yourself from scratch without making assumptions. Without it, I can’t bring the board and make pin modification, and can’t demo it to the company I work for, which could equate to a nice number of CPU sales for you.
Thanks
Hi Greg,
Another improvement to this tutorial would be a process flow similar to the one below, which is probably wrong, but it gives a person an idea of the parts to all this. For example, there is no information that the patch files need to applied prior to compiling and that the patch files add the default device tree which seems to not be the min_config from cubeMX.
I now get a new set of errors while compiling and I suspect it is because the patch files are broken, or some other step is missing. See the error below.
Considering that a custom device tree is likely critical to working with this part, it should be easier. For example, I want to enable FDCAN2 because my application requires FDCAN1 and FDCAN2 and later I will need TFT configured. It seems what is really a must is the source files already patch for osd32mp1 from the developer package and all one needs is to generate the device tree from CubeMX and replace it for each image(TF-A,U-boot,Kernel). This is a really nice part, it would a shame not to have something like this be standard. I will eventually be able to align all this and keep it as a close secret, but that doesn’t help anyone else after.
Any help is appreciated.
Thank you
– PROCESS FLOW –
1. Get CubeMx and install it
2. Get the device tree and open it from CubeMX, may need to migrate
3. Generate from CubeMX
4. Get developer package and extract it
5. Copy the generated files from CubeMX to each image
6. Get the patch files and copy them to each image, replacing prior makefile.sdk
7. Apply the patches – see howto file in each image
8. Compile each image – see howto file in each image– COMPILATION ERROR –
DTC arch/arm/dts/stm32mp157c-osd32mp1-brk.dtb
Error: arch/arm/dts/.stm32mp157c-osd32mp1-brk.dtb.pre.tmp:1017.1-7 Label or path optee not found
FATAL ERROR: Syntax error parsing input tree
scripts/Makefile.lib:308: recipe for target ‘arch/arm/dts/stm32mp157c-osd32mp1-brk.dtb’ failedHello Orocle,
1. Why would I be looking here for DK2 information? And this is a sincere question not rhetorical.
[Octavo]: Sorry for the inconvenience.
The CubeMX Tutorial was first published in June 2019. At that time OSD32MP1-BRK was not yet available to the public. Hence, we chose a STM32MP15x platform (DK2) that was easily available as the platform for this tutorial.
The overall flow of configuring the device trees and the tools used (CubeMX, CubeProgrammer, OpenSTLinux SDK etc) are same
for both STM32MP15x and OSD32MP15x.CubeMX app note is intended to help customers become familiar with the overall flow of configuring device trees. We are currently working on a BRK specific version of CubeMX app note. We will release it soon.
2. I’ve followed the STM32MP1 CubeMX Tutorial for OSD32MP15x, and well it doesn’t work. I think it is because the
patching instructions aren’t included in the tutorial so you end up with something that doesn’t work.
“Error: Message from Embedded Flash Loader : mmc device 0 not found” This is likely because the missing
sdcard detect pin? among other things not compatible with DK2.[Octavo]: The OpenSTLinux Starter Package suggested in the tutorial is for DK2. The chip detect pins for DK2 and BRK boards
are different. The Flash Loader is unable to detect mmc0 because it is looking for chip detect signal on the wrong pin.To bring up OSD32MP1-BRK successfully, we recommend following the steps under section 5.2 of
BRK Getting Started Guide (https://octavosystems.com/app_notes/osd32mp1-brk-getting-started/).
We do provide OpenSTLinux and Debian options. Choose OpenSTLinux for this exercise.Note: In order to flash BRK using instructions from CubeMX tutorial, you need the BRK specific .tsv file and Device Tree files.
The correct .tsv file can be found under “Cube Programmer Support” here – https://github.com/octavosystems/BRK_Developer_Package_patches.
The BRK specific Device Tree binaries can be built after applying the given patches to OpenSTLinux Developer Package as described here – https://github.com/octavosystems/BRK_Developer_Package_patches.The patches actually take care of several steps described in the tutorial (thereby helping you skip them):
– Generating board specific device trees
– Placing the source device trees in respective directories in the developer environment
– Modifying makefiles suitably to account for the new device tree source files etc.3. – COMPILATION ERROR –
DTC arch/arm/dts/stm32mp157c-osd32mp1-brk.dtb
Error: arch/arm/dts/.stm32mp157c-osd32mp1-brk.dtb.pre.tmp:1017.1-7 Label or path optee not found
FATAL ERROR: Syntax error parsing input tree
scripts/Makefile.lib:308: recipe for target ‘arch/arm/dts/stm32mp157c-osd32mp1-brk.dtb’ failed[Octavo]: As mentioned in the “Requirements” table of https://github.com/octavosystems/BRK_Developer_Package_patches, the
patches require these specific versions of Developer Package, SDK, U-Boot etc. Please double check the version of your Developer
Package. Using v2.0.0 (instead of the latest version) should resolve the issue. You can find Dev Package v2.0.0 under section 2.1 of
ST Wiki’s Archives – https://wiki.st.com/stm32mpu/wiki/STM32MP1_Developer_Package_-_Linux_kernel#Archives4. For example, I want to enable FDCAN2 because my application requires FDCAN1 and FDCAN2 and later I will need TFT configured.
It seems what is really a must is the source files already patch for osd32mp1 from the developer package and all one needs is
to generate the device tree from CubeMX and replace it for each image(TF-A,U-boot,Kernel).[Octavo]: As mentioned in the Caveats of CubeMX tutorial, CubeMX does not allow us to fully configure all peripherals through its GUI. For example, it does not support configuration of STPMIC1 PMIC or let us set chip detect GPIO pin for uSD card. Such settings require manual configuration and validation.
The output of CubeMX should be used as a starting point only if you’re building DT from scratch. Otherwise, you can use it as a reference.
If you want to enable FDCANx for BRK (for which DT is already provided), we recommend using the Device Tree generated by CubeMX as a reference to modify the provided Device Tree for BRK. You can copy/paste the FDCAN related nodes from CubeMX DT to BRK’s DT and set other tags/properties under “USER CODE” suitably (if necessary).Thank you for all the suggestions. We will make sure to capture and address all your concerns in the upcoming BRK specific CubeMX tutorial to ensure better development experience for other customers.
Please let us know if you have any other concerns.
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